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Token Watcher
See exactly what your Claude and ChatGPT conversations cost
Token Watcher is a lightweight Chrome extension that reveals the true cost of your Claude.ai and ChatGPT conversations in real-time. No API key needed, no external servers. Track input/output tokens, per-model breakdown, and MCP call health — everything stays on your device. Stop guessing. Start monitoring. Free for 7 days of history, Pro for 30 days.
I built Token Watcher because I was horrified by my own AI spending.
A few months ago, I was building AI agents using Claude and the MCP ecosystem
intensified rapidly. I noticed my token costs were climbing exponentially —
but I had zero visibility into where the money was actually going. Was it the
chatty agent? The recursive lookups? The caching inefficiency?
I started asking other AI developers. The pattern was clear:
- "I have no idea what my monthly bill is."
- "I disabled Claude's code interpreter to save costs, but I still don't know
if it helps."
- "OpenAI's dashboard is confusing. Anthropic doesn't show per-chat costs."
- "By the time I realized the cost spike, it was too late."
So I built Token Watcher — a browser extension that shows you exactly what
each conversation costs, in real-time, without any external servers or API keys.
The response has been overwhelming:
→ 52+ installs in the first week
→ Users report saving 10-40% on token costs by spotting inefficiencies
→ Developers love the "no external server" design (privacy-first wins)
→ Teams are using it to enforce budget guardrails
We're also shipping Pro ($19/month) for teams that need 30-day history
and CSV exports for billing cycles.
Next, we're targeting AI agent developers and Cursor/Claude Code power users
who are likely burning the most tokens.
Token Watcher is completely privacy-first. All data stays on your device.
We don't sell your data, we don't require any API keys, and we don't track
conversation content — only token costs.
Check it out: https://chrome.google.com/websto...
Ask me anything — I'm here all day! 🎉
About Token Watcher on Product Hunt
“See exactly what your Claude and ChatGPT conversations cost”
Token Watcher was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #141 on the daily leaderboard. Token Watcher is a lightweight Chrome extension that reveals the true cost of your Claude.ai and ChatGPT conversations in real-time. No API key needed, no external servers. Track input/output tokens, per-model breakdown, and MCP call health — everything stays on your device. Stop guessing. Start monitoring. Free for 7 days of history, Pro for 30 days.
On the analytics side, Token Watcher competes within Chrome Extensions, Productivity and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Token Watcher performed against the three products that launched closest to it on the same day.
Who hunted Token Watcher ?
Token Watcher was hunted by Yancan Chen. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Token Watcher including community comment highlights and product details, visit the product overview.
Yancan Chen